CN106186770B - Activation method of regenerated micro powder - Google Patents

Activation method of regenerated micro powder Download PDF

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Publication number
CN106186770B
CN106186770B CN201610575127.5A CN201610575127A CN106186770B CN 106186770 B CN106186770 B CN 106186770B CN 201610575127 A CN201610575127 A CN 201610575127A CN 106186770 B CN106186770 B CN 106186770B
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micro powder
powder
activation method
regenerative micro
particle
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CN106186770A (en
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何志斌
张双艳
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Wuhan Yuanjing Ready Mixed Concrete Co ltd
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Wuhan Yuanjing Ready Mixed Concrete Co ltd
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    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02Treatment
    • C04B20/04Heat treatment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04Waste materials; Refuse
    • C04B18/16Waste materials; Refuse from building or ceramic industry
    • C04B18/167Recycled materials, i.e. waste materials reused in the production of the same materials
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02Treatment
    • C04B20/023Chemical treatment
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B20/00Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
    • C04B20/02Treatment
    • C04B20/026Comminuting, e.g. by grinding or breaking; Defibrillating fibres other than asbestos
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B28/00Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
    • CCHEMISTRY; METALLURGY
    • C04CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04BLIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B2201/00Mortars, concrete or artificial stone characterised by specific physical values
    • C04B2201/50Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02WCLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00Technologies for solid waste management
    • Y02W30/50Reuse, recycling or recovery technologies
    • Y02W30/91Use of waste materials as fillers for mortars or concrete

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Civil Engineering (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Inorganic Chemistry (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The invention discloses a method for activating regenerated micro powder, which comprises the following steps: crushing the construction waste into particles of 25-40 mm, calcining for 1-4 h at 200-500 ℃, ball-milling for 2-5 h, screening construction waste powder of 30-80 μm, calcining for 2-4 h at 600-700 ℃, heating to 800-1000 ℃ for 0.5-1.5 h, preserving heat for 1-3 h, cooling to room temperature for 0.5-1.5 h, and then: and (3) fully and uniformly mixing the regenerated micro powder with an excitant accounting for 0.1-2.2% of the weight percentage of the regenerated micro powder to obtain the activated regenerated micro powder. The activation method has the characteristics of good activation effect, simple operation and environmental protection. Compared with common concrete, the regenerated micro-powder concrete prepared from the regenerated micro-powder treated by the method has obviously improved compressive strength and working performance.

Description

A kind of regenerative micro powder activation method
Technical field
Technical field is utilized the present invention relates to solid waste, particularly a kind of regenerative micro powder activation method.
Background technology
With continuing to increase for China's city reorganization and expansion scale and quickly propelling for building Socialist New, largely The dismounting of old building and structures generates the building castoffs such as substantial amounts of concrete, brick, stone, mortar and tile fragment.According to live build Portion is, it is expected that to the year two thousand twenty China also by 30,000,000,000 square metres of New Dwelling, resulting building castoff is at least up to 5,000,000,000 Ton.At present, building castoff does not only take up a large amount of soils largely using traditional approach disposal, but also can be to environment and people Body causes safely very big harm.In addition, a large amount of productions of concrete need a large amount of exploitation high quality natural sand stone resources, nature is caused The severe exacerbation of environment.Building castoff be processed into regeneration aggregate replace natural sand stone produce concrete in terms of research compared with It is many, but building castoff is processed into specific surface area more than 400m2/ kg superfines replaces cement or is used as admixture system Research in terms of standby concrete is ripe not enough.The regeneration of building castoff turns into one needs what is urgently solved to ask Topic.
The content of the invention
It is an object of the invention to overcome the shortcomings of above-mentioned existing background technology, there is provided a kind of regenerative micro powder activation method.
The purpose of the present invention is achieved through the following technical solutions:
The invention discloses a kind of regenerative micro powder activation method, activation method comprises the following steps:
1)It is broken:By the particle that construction waste crushing is 25 ~ 40mm;
2)Pretreatment:1 ~ 4h is calcined under conditions of obtained particle is placed in into 200 ~ 500 DEG C;
3)Ball milling:Pretreated building waste is subjected to 2 ~ 5h of ball milling, 30 μm ~ 80 μm of building waste powder is obtained;
4)Calcining:600 ~ 700 DEG C of calcinings 2 ~ 4h, 0.5 ~ 1.5h are placed in again and are warming up to 800 ~ 1000 DEG C, are incubated 1 ~ 3h, 0.5 ~ 1.5h is cooled to room temperature, obtains regenerative micro powder;
5)Mixing:The exciting agent of regenerative micro powder and its percetage by weight 0.1 ~ 2.2% is sufficiently mixed uniformly, you can obtain Activating and regenerating micro mist.
It is preferred that, step 5) described in the addition of exciting agent be the 1 ~ 2% of the regenerative micro powder weight.
It is preferred that, step 1) construction waste crushing to 25 ~ 30mm particle.
It is preferred that, the exciting agent is CaO, CaCl2、Ca(OH)2Or the one or more in waterglass.
It is preferred that, the building waste is the one or more in discarded concrete, discarded brick or discarded marble.
Compared with prior art, the beneficial effects of the present invention are:
(1)Material of the present invention is simple and easy to get, technique easy-regulating, adapts to large-scale production.
(2)The present invention can save the resources such as cement soil, weaken influence of the building waste accumulation to environment, reduce into This.The trans-utilization of building waste, reduces its accumulating amount, the due value in soil is given full play to, to preserving the ecological environment and promoting Entering the development of recycling economy has good impetus.
(3)Regenerative micro powder concrete prepared by the regenerative micro powder treated by the inventive method, compared with concrete, resists Compressive Strength, service behaviour are significantly increased.
Embodiment
For a better understanding of the present invention, with reference to the embodiment content that the present invention is furture elucidated, but the present invention
Content is not limited solely to the following examples.
Embodiment 1
A kind of regenerative micro powder activation method, the activation method comprises the following steps:
1)It is broken:By the particle that construction waste crushing is 30mm;
2)Pretreatment:Obtained particle is placed under conditions of 400 DEG C and calcines 3h;
3)Ball milling:Pretreated building waste particle is subjected to ball milling 4h, 30 μm ~ 80 μm of building waste powder is obtained;
4)Calcining:600 DEG C of calcinings 3h, 1h are placed in again and are warming up to 900 DEG C, are incubated 3h, 1h is cooled to room temperature, are obtained regeneration micro- Powder;
5)Mixing:The exciting agent of regenerative micro powder and its percetage by weight 1% is sufficiently mixed uniformly, sealing preserve, you can To the activating and regenerating micro mist.
Embodiment 2
A kind of regenerative micro powder activation method, the activation method comprises the following steps:
1)It is broken:By the particle that construction waste crushing is 40mm;
2)Pretreatment:Obtained particle is placed under conditions of 500 DEG C and calcines 4h;
3)Ball milling:Pretreated building waste particle is subjected to ball milling 4h, 30 μm ~ 80 μm of building waste powder is obtained;
4)Calcining:600 DEG C of calcinings 4h, 1.5h are placed in again and are warming up to 800 DEG C, are incubated 3h, 1.5h is cooled to room temperature, obtained Regenerative micro powder;
5)Mixing:The exciting agent of regenerative micro powder and its percetage by weight 2% is sufficiently mixed uniformly, sealing preserve, you can To the activating and regenerating micro mist.
Embodiment 3
A kind of regenerative micro powder activation method, the activation method comprises the following steps:
1)It is broken:By the particle that construction waste crushing is 25mm;
2)Pretreatment:Obtained particle is placed under conditions of 300 DEG C and calcines 3h;
3)Ball milling:Pretreated building waste particle is subjected to ball milling 3h, 30 μm ~ 80 μm of building waste powder is obtained;
4)Calcining:700 DEG C of calcinings 2h, 0.5h are placed in again and are warming up to 1000 DEG C, are incubated 1h, 0.5h is cooled to room temperature, obtained Regenerative micro powder;
5)Mixing:The exciting agent of regenerative micro powder and its percetage by weight 0.1% is sufficiently mixed uniformly, sealing preserve, you can Obtain activating and regenerating micro mist.
Comparative example 1
A kind of regenerative micro powder activation method, the activation method comprises the following steps:
1)It is broken:By the particle that construction waste crushing is 50mm;
2)Pretreatment:Obtained particle is placed under conditions of 300 DEG C and calcines 5h;
3)Ball milling:Pretreated building waste particle is subjected to ball milling 1h, building waste powder is obtained;
4)Calcining:900 DEG C of calcinings 4h, 0.3h are placed in again and are warming up to 950 DEG C, are incubated 1h, 1h is cooled to room temperature, regenerated Micro mist;
5)Mixing:The exciting agent with regenerative micro powder weight than 0.5% is taken to be sufficiently mixed uniformly, sealing preserve, you can described To activating and regenerating micro mist.
Comparative example 2
The regenerative micro powder activation method of this comparative example and embodiment 1 is essentially identical, and difference is, the exciting agent Addition is different, is specially:Without exciting agent, no step 5).Other method is identical with embodiment.
Using concrete sample as object, embodiment, comparative example is investigated concrete system is carried out according in concrete proportioning table 2 It is standby, according to GB/T 50080-2002《Standard for test methods of properties of ordinary concrete mixture standard》Fresh concrete mixture collapses Degree of falling;According to GB/T 50081-2002《Standard for test methods of mechanical properties of ordinary concrete》, tested with omnipotent pressure testing machine Benchmark sample and embodiment 7 days and 28 days compression strength.
The concrete proportioning of table 1
Through conventionally test, the indices of the concrete of embodiment 1 ~ 3 and comparative example 1 ~ 2 formation are seen attached list.
The performance of the regenerative micro powder concrete of table 2
Wherein, the match ratio of normal concrete uses the scheme 1 in table 1 to match, and embodiment, comparative example are used in table 1 The proportioning of scheme 2 is tested.From table 2 it can be seen that embodiments of the invention(1~3)Concrete performance is in slump-loss and resists All more excellent compared with normal concrete proportioning in terms of Compressive Strength, calcining initial temperature is too high, causes the performance for preparing concrete to drop It is low.Not mixing exciting agent equally reduces concrete performance.
A kind of regenerative micro powder activation method that the invention is implemented to be provided is described in detail above, For those of ordinary skill in the art, according to the thought of the invention embodiment, in embodiment and application On will change, in summary, this specification content should not be construed as the limitation to the invention.

Claims (4)

1. a kind of regenerative micro powder activation method, it is characterised in that the activation method comprises the following steps:
1)It is broken:By the particle that construction waste crushing is 25 ~ 40mm;
2)Pretreatment:1 ~ 4h is calcined under conditions of obtained particle is placed in into 200 ~ 500 DEG C;
3)Ball milling:Pretreated building waste particle is subjected to 2 ~ 5h of ball milling, 30 μm ~ 80 μm of building waste powder is obtained;
4)Calcining:600 ~ 700 DEG C of calcinings 2 ~ 4h, 0.5 ~ 1.5h are placed in again and are warming up to 800 ~ 1000 DEG C, are incubated 1 ~ 3h, 0.5 ~ 1.5h Room temperature is cooled to, regenerative micro powder is obtained;
5)Mixing:The exciting agent of regenerative micro powder and its percetage by weight 1 ~ 2% is sufficiently mixed uniformly, you can obtain activating and regenerating Micro mist.
2. a kind of regenerative micro powder activation method according to claim 1, it is characterised in that:Step 1)The building waste is broken It is broken to 25 ~ 30mm particle.
3. a kind of regenerative micro powder activation method according to claim 1, it is characterised in that:The exciting agent be CaO, CaCl2、Ca(OH)2Or the one or more in waterglass.
4. a kind of regenerative micro powder activation method according to claim 1, it is characterised in that:The building waste is discarded mixed One or more in solidifying soil, discarded brick or discarded marble.
CN201610575127.5A 2016-07-21 2016-07-21 Activation method of regenerated micro powder Active CN106186770B (en)

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Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107892497A (en) * 2017-11-02 2018-04-10 上海建工集团股份有限公司 A kind of regeneration concrete micro mist preparation method
CN108117285B (en) * 2017-12-01 2021-01-19 深圳市华威环保建材有限公司 Activation method of building residue soil
CN107973582B (en) * 2017-12-27 2018-11-20 广州市水电建设工程有限公司 A kind of soil modifier and preparation method thereof applied to road engineering
CN110041007B (en) * 2019-03-11 2022-04-01 武汉理工大学 Anti-permeability marble powder composite admixture and application thereof
CN110590295B (en) * 2019-10-29 2022-10-28 山东中岩建材科技有限公司 Steam-cured concrete for CRTS III type ballastless track slab and preparation method thereof
CN111116142B (en) * 2019-12-31 2021-12-31 同济大学 Ecological concrete prepared from building waste soil sintered micro powder and preparation method of concrete product thereof
CN112430044A (en) * 2020-12-11 2021-03-02 深圳市恒星建材有限公司 Chlorine ion erosion resistant permeable recycled concrete and preparation method thereof
CN113149536A (en) * 2021-05-27 2021-07-23 金华职业技术学院 Regenerated micropowder concrete and preparation method thereof
CN115650617A (en) * 2022-08-26 2023-01-31 台州学院 Preparation method for improving activity of regenerated micro-powder
CN115626796B (en) * 2022-09-08 2023-11-24 深圳市衡骏环保科技有限公司 Recycled aggregate self-compacting concrete

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JP2005104759A (en) * 2003-09-29 2005-04-21 Ryoichi Nishishige Treating method of waste gypsum board
CN102219416A (en) * 2011-04-07 2011-10-19 上海德滨环保科技有限公司 High activity regenerated powder and preparation method thereof
CN103130431A (en) * 2013-03-06 2013-06-05 北京新奥混凝土集团有限公司 Reclaimed active ultrafine powder and preparation method thereof
CN103771776A (en) * 2013-12-27 2014-05-07 中国矿业大学 Recycled micropowder concrete and preparation method thereof

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005104759A (en) * 2003-09-29 2005-04-21 Ryoichi Nishishige Treating method of waste gypsum board
CN102219416A (en) * 2011-04-07 2011-10-19 上海德滨环保科技有限公司 High activity regenerated powder and preparation method thereof
CN103130431A (en) * 2013-03-06 2013-06-05 北京新奥混凝土集团有限公司 Reclaimed active ultrafine powder and preparation method thereof
CN103771776A (en) * 2013-12-27 2014-05-07 中国矿业大学 Recycled micropowder concrete and preparation method thereof

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